[834df50] | 1 | /** |
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| 2 | * @file |
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| 3 | * |
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| 4 | * Block device partition management. |
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| 5 | */ |
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| 6 | |
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| 7 | /* |
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| 8 | * Copyright (c) 2009 |
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| 9 | * embedded brains GmbH |
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| 10 | * Obere Lagerstr. 30 |
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| 11 | * D-82178 Puchheim |
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| 12 | * Germany |
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| 13 | * <rtems@embedded-brains.de> |
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| 14 | * |
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| 15 | * The license and distribution terms for this file may be |
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| 16 | * found in the file LICENSE in this distribution or at |
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| 17 | * http://www.rtems.com/license/LICENSE. |
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| 18 | */ |
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| 19 | |
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| 20 | #include <stdio.h> |
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| 21 | #include <stdlib.h> |
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| 22 | #include <string.h> |
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| 23 | |
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| 24 | #include <rtems/bdpart.h> |
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| 25 | #include <rtems/error.h> |
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| 26 | #include <rtems/shell.h> |
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| 27 | |
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| 28 | #define RTEMS_BDPART_SHELL_ERROR( fmt, ...) \ |
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| 29 | do { \ |
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| 30 | printf( "error: " fmt "\n", ##__VA_ARGS__); \ |
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| 31 | return -1; \ |
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| 32 | } while (0) |
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| 33 | |
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| 34 | #define RTEMS_BDPART_SHELL_ERROR_SC( sc, fmt, ...) \ |
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| 35 | if ((sc) != RTEMS_SUCCESSFUL) { \ |
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| 36 | printf( "error: " fmt ": %s\n", ##__VA_ARGS__, rtems_status_text( sc)); \ |
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| 37 | return -1; \ |
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| 38 | } |
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| 39 | |
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| 40 | typedef enum { |
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| 41 | RTEMS_BDPART_SHELL_FS, |
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| 42 | RTEMS_BDPART_SHELL_N, |
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| 43 | RTEMS_BDPART_SHELL_MBR, |
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| 44 | RTEMS_BDPART_SHELL_GPT |
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| 45 | } rtems_bdpart_shell_state; |
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| 46 | |
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| 47 | static const char rtems_bdpart_shell_usage [] = |
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| 48 | "disk format and utility functions\n" |
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| 49 | "\n" |
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| 50 | "fdisk DISK_NAME\n" |
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| 51 | "\tprints the partition table\n" |
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| 52 | "\n" |
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| 53 | "fdisk DISK_NAME [FS N1 [N2 ... ]] ... [write] [FORMAT]\n" |
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| 54 | "\tcreates a new partition table\n" |
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| 55 | "\n" |
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| 56 | "fdisk DISK_NAME register\n" |
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| 57 | "\tcreates a logical disk for each partition of the disk\n" |
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| 58 | "\n" |
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| 59 | "fdisk DISK_NAME unregister\n" |
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| 60 | "\tdeletes the logical disks associated with the partitions of the disk\n" |
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| 61 | "\n" |
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| 62 | "fdisk DISK_NAME mount\n" |
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| 63 | "\tmounts the file system of each partition of the disk\n" |
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| 64 | "\n" |
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| 65 | "fdisk DISK_NAME unmount\n" |
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| 66 | "\tunmounts the file system of each partition of the disk\n" |
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| 67 | "\n" |
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| 68 | "option values:\n" |
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| 69 | "\tDISK_NAME: absolute path to disk device like '/dev/hda'\n" |
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| 70 | "\tN*: weights of positive integers\n" |
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| 71 | "\tFS: 0x00 ... 0xff, fat12, fat16, fat32, data\n" |
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| 72 | "\twrite: write the new partition table to the disk\n" |
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| 73 | "\tFORMAT: mbr [[no]dos], gpt"; |
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| 74 | |
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| 75 | static int rtems_bdpart_shell_main( int argc, char **argv) |
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| 76 | { |
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| 77 | rtems_status_code sc = RTEMS_SUCCESSFUL; |
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| 78 | rtems_bdpart_format format; |
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| 79 | rtems_bdpart_partition pt [RTEMS_BDPART_PARTITION_NUMBER_HINT]; |
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| 80 | unsigned dist [RTEMS_BDPART_PARTITION_NUMBER_HINT]; |
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| 81 | size_t count = RTEMS_BDPART_PARTITION_NUMBER_HINT; |
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| 82 | const char *disk_name = NULL; |
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| 83 | const char *mount_base = "/mnt"; |
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| 84 | bool do_create = false; |
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| 85 | bool do_read = false; |
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| 86 | bool do_write = false; |
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| 87 | bool do_register = false; |
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| 88 | bool do_unregister = false; |
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| 89 | bool do_mount = false; |
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| 90 | bool do_unmount = false; |
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| 91 | bool do_dump = false; |
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| 92 | |
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| 93 | if (argc < 2) { |
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| 94 | puts( rtems_bdpart_shell_usage); |
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| 95 | return -1; |
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| 96 | } |
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| 97 | |
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| 98 | disk_name = argv [1]; |
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| 99 | |
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| 100 | if (argc == 2) { |
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| 101 | do_read = true; |
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| 102 | do_dump = true; |
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| 103 | } else if (argc == 3) { |
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| 104 | /* Check option */ |
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| 105 | if (strcmp( argv [2], "register") == 0) { |
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| 106 | do_read = true; |
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| 107 | do_register = true; |
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| 108 | } else if (strcmp( argv [2], "unregister") == 0) { |
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| 109 | do_read = true; |
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| 110 | do_unregister = true; |
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| 111 | } else if (strcmp( argv [2], "mount") == 0) { |
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| 112 | do_read = true; |
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| 113 | do_mount = true; |
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| 114 | } else if (strcmp( argv [2], "unmount") == 0) { |
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| 115 | do_read = true; |
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| 116 | do_unmount = true; |
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| 117 | } else { |
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| 118 | RTEMS_BDPART_SHELL_ERROR( "unexpected option: %s", argv [2]); |
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| 119 | } |
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| 120 | } else { |
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| 121 | rtems_bdpart_shell_state state = RTEMS_BDPART_SHELL_FS; |
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| 122 | uint8_t current_type = RTEMS_BDPART_MBR_FAT_32; |
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| 123 | size_t i = 0; |
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| 124 | int ai = 0; |
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| 125 | |
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| 126 | /* Clear partition table */ |
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| 127 | memset( pt, 0, sizeof( pt)); |
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| 128 | |
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| 129 | /* Default format */ |
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| 130 | format.type = RTEMS_BDPART_FORMAT_MBR; |
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| 131 | format.mbr.disk_id = 0; |
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| 132 | format.mbr.dos_compatibility = true; |
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| 133 | |
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| 134 | for (ai = 2; ai < argc; ++ai) { |
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| 135 | char *s = argv [ai]; |
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| 136 | unsigned long v = 0; |
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| 137 | char *end = NULL; |
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| 138 | |
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| 139 | if (strlen( s) == 0) { |
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| 140 | continue; |
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| 141 | } else if (strcmp( s, "write") == 0) { |
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| 142 | do_write = true; |
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| 143 | continue; |
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| 144 | } else if (strcmp( s, "mbr") == 0) { |
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| 145 | state = RTEMS_BDPART_SHELL_MBR; |
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| 146 | format.type = RTEMS_BDPART_FORMAT_MBR; |
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| 147 | continue; |
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| 148 | } else if (strcmp( s, "gpt") == 0) { |
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| 149 | state = RTEMS_BDPART_SHELL_GPT; |
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| 150 | format.type = RTEMS_BDPART_FORMAT_GPT; |
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| 151 | continue; |
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| 152 | } |
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| 153 | |
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| 154 | switch (state) { |
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| 155 | case RTEMS_BDPART_SHELL_FS: |
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| 156 | v = strtoul( s, &end, 16); |
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| 157 | if (*end == '\0') { |
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| 158 | if (v <= 0xffU) { |
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| 159 | current_type = (uint8_t) v; |
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| 160 | } else { |
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| 161 | RTEMS_BDPART_SHELL_ERROR( "type value out of range: %s", argv [ai]); |
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| 162 | } |
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| 163 | } else if (strcmp( s, "fat32") == 0) { |
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| 164 | current_type = RTEMS_BDPART_MBR_FAT_32; |
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| 165 | } else if (strcmp( s, "data") == 0) { |
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| 166 | current_type = RTEMS_BDPART_MBR_DATA; |
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| 167 | } else if (strcmp( s, "fat16") == 0) { |
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| 168 | current_type = RTEMS_BDPART_MBR_FAT_16; |
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| 169 | } else if (strcmp( s, "fat12") == 0) { |
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| 170 | current_type = RTEMS_BDPART_MBR_FAT_12; |
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| 171 | } else { |
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| 172 | RTEMS_BDPART_SHELL_ERROR( "unexpected option: %s", argv [ai]); |
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| 173 | } |
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| 174 | state = RTEMS_BDPART_SHELL_N; |
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| 175 | break; |
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| 176 | case RTEMS_BDPART_SHELL_N: |
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| 177 | v = strtoul( s, &end, 10); |
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| 178 | if (*end == '\0') { |
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| 179 | rtems_bdpart_to_partition_type( current_type, pt [i].type); |
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| 180 | dist [i] = v; |
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| 181 | if (i < count) { |
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| 182 | ++i; |
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| 183 | } else { |
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| 184 | RTEMS_BDPART_SHELL_ERROR( "too many partitions"); |
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| 185 | } |
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| 186 | } else { |
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| 187 | --ai; |
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| 188 | state = RTEMS_BDPART_SHELL_FS; |
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| 189 | } |
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| 190 | break; |
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| 191 | case RTEMS_BDPART_SHELL_MBR: |
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| 192 | if (strcmp( s, "dos") == 0) { |
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| 193 | format.mbr.dos_compatibility = true; |
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| 194 | } else if (strcmp( s, "nodos") == 0) { |
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| 195 | format.mbr.dos_compatibility = false; |
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| 196 | } else { |
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| 197 | RTEMS_BDPART_SHELL_ERROR( "unexpected option: %s", argv [ai]); |
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| 198 | } |
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| 199 | break; |
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| 200 | case RTEMS_BDPART_SHELL_GPT: |
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| 201 | RTEMS_BDPART_SHELL_ERROR( "unexpected option: %s", argv [ai]); |
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| 202 | default: |
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| 203 | RTEMS_BDPART_SHELL_ERROR( "fdisk interal error"); |
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| 204 | } |
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| 205 | } |
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| 206 | |
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| 207 | /* Partition number */ |
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| 208 | count = i; |
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| 209 | |
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| 210 | /* Actions */ |
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| 211 | do_create = true; |
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| 212 | do_dump = true; |
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| 213 | if (do_write) { |
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| 214 | do_read = true; |
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| 215 | } |
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| 216 | } |
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| 217 | |
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| 218 | if (do_create) { |
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| 219 | /* Create partitions */ |
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| 220 | sc = rtems_bdpart_create( disk_name, &format, pt, dist, count); |
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| 221 | RTEMS_BDPART_SHELL_ERROR_SC( sc, "cannot create partitions for '%s'", disk_name); |
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| 222 | } |
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| 223 | |
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| 224 | if (do_write) { |
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| 225 | /* Write partitions */ |
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| 226 | sc = rtems_bdpart_write( disk_name, &format, pt, count); |
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| 227 | RTEMS_BDPART_SHELL_ERROR_SC( sc, "cannot write partitions to '%s'", disk_name); |
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| 228 | } |
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| 229 | |
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| 230 | if (do_read) { |
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| 231 | /* Read partitions */ |
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| 232 | count = RTEMS_BDPART_PARTITION_NUMBER_HINT; |
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| 233 | sc = rtems_bdpart_read( disk_name, &format, pt, &count); |
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| 234 | RTEMS_BDPART_SHELL_ERROR_SC( sc, "cannot read partitions from '%s'", disk_name); |
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| 235 | } |
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| 236 | |
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| 237 | if (do_register) { |
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| 238 | /* Register partitions */ |
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| 239 | sc = rtems_bdpart_register( disk_name, pt, count); |
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| 240 | RTEMS_BDPART_SHELL_ERROR_SC( sc, "cannot register partitions of '%s'", disk_name); |
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| 241 | } |
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| 242 | |
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| 243 | if (do_unregister) { |
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| 244 | /* Unregister partitions */ |
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| 245 | sc = rtems_bdpart_unregister( disk_name, pt, count); |
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| 246 | RTEMS_BDPART_SHELL_ERROR_SC( sc, "cannot unregister partitions of '%s'", disk_name); |
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| 247 | } |
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| 248 | |
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| 249 | if (do_mount) { |
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| 250 | /* Mount partitions */ |
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| 251 | sc = rtems_bdpart_mount( disk_name, pt, count, mount_base); |
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| 252 | RTEMS_BDPART_SHELL_ERROR_SC( sc, "cannot mount partitions of '%s' to '%s'", disk_name, mount_base); |
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| 253 | } |
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| 254 | |
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| 255 | if (do_unmount) { |
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| 256 | /* Unmount partitions */ |
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| 257 | sc = rtems_bdpart_unmount( disk_name, pt, count, mount_base); |
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| 258 | RTEMS_BDPART_SHELL_ERROR_SC( sc, "cannot unmount partitions of '%s'", disk_name); |
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| 259 | } |
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| 260 | |
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| 261 | if (do_dump) { |
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| 262 | /* Dump partitions */ |
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| 263 | rtems_bdpart_dump( pt, count); |
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| 264 | } |
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| 265 | |
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| 266 | return 0; |
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| 267 | } |
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| 268 | |
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| 269 | struct rtems_shell_cmd_tt rtems_shell_FDISK_Command = { |
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| 270 | .name = "fdisk", |
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| 271 | .usage = rtems_bdpart_shell_usage, |
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| 272 | .topic = "files", |
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| 273 | .command = rtems_bdpart_shell_main, |
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| 274 | .alias = NULL, |
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| 275 | .next = NULL |
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| 276 | }; |
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